'Green' Electric Tricycles

Japanese electric vehicle manufacturer Terra Motors President Toru Tokushige (2nd L) and former Apple Japan CEO Kenji Yamamoto (L) poses with the company's prototype model of an EV Tricycle Taxi during a press preview in Tokyo on March 27, 2013. The taxi carries 6 passengers and the Japanese venture is confident in winning a big slice of the tuk-tuk market in Asia. Photo: AFP/Getty Images

A woman and her son sit inside the capsule of an electric tricycle as they drive along a main road in central Beijing. Photo: Reuters

A visitor looks at a hydrogen power-assisted tricycle, exhibited by Japan's Iwatani Corp., during the Battery Japan exhibition in Tokyo. The maker said the tricycle does not require recharging as long as it is switched on because the hydrogen cartridge automatically supplies hydrogen gas to its fuel cell to generate electric power whenever the tricycle detects the battery voltage becomes lower than the pre-set level. And the generated power drives the motor to assist with pedaling. Photo: AP

Japanese electric auto venture e-minomo president Tatsuji Nishio displays the electric tricycle 'Batora', which drives up to 100 kilometres on a single charge, at the Electric Vehicle Development Technology Expo in Yokohama, suburban Tokyo on October 12, 2011. The 'Batora' is developed for the food delivery service such as pizza delivery. Photo: AFP/Getty Images

This electric tricycle is part of an Asian Development Bank (ADB) funded project to introduce energy efficient transportation alternatives in the Philippines. Photo: AFP/Getty Images